Home / 43,243.43-64,874.54-13,257.78

Finding the Fourth Proportional to 43,243.43, 64,874.54 and 13,257.78

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Solution

The fourth proportional to 43,243.43, 64,874.54 and 13,257.78 is: 19,889.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,243.43 : 64,874.54 = 13,257.78 : x
  2. Step 2: Convert to fraction form
    43,243.43/64,874.54 = 13,257.78/x
  3. Step 3: Cross multiply
    43,243.43x = 64,874.54 × 13,257.78
  4. Step 4: Simplify right side
    43,243.43x = 860,092,378.92
  5. Step 5: Solve for x
    x = 860,092,378.92/43,243.43
  6. Step 6: Final answer
    x = 19,889.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.